Unable to open iOS 12.1.1 device using appiumStudio version 11.3.28

Hi,
does appiumStudio v11.3.28 not supports iOS 12.1.1 version?
I am unable to open the device(iPhone 6) in appiumStudio in an apple account, while other device(iPhone X) with version 11.1.3 is opening without any issue.

Try downloading latest Appium studio and see if issues is still there or not